Milling tool



July 26, 1949. c. E. succoP 2,477,153

` MILLING lrooL. Filed nec. 27, 194s 2 sheets-sheet 1' July `26, 1949. c. E. sUccoP 2,477,153

` v MILLING Toon Filed Dec. 27, 191.13 2 Sheets-Sheet 2 (Zak/SZ? Jacco/b Patented July 26, 1949 UNITED- s'rArEs PATENT oFF-:CE1

Charles E. Succop, Los Angeles, Calif., assigner to Anna Louise Simeon Application Becemlier 27,1943, Serial No. 515,709

3 Claims. l

the edge, the set; and width of the teeth. Wheny such tools are ground. to sharpenthem, .they lose their original size. and theirutility is thus further restricted.

It is a broad and important object ofv my in.- ventionto provide a milling tool of universal character which` embodies acarrier which may be mounted on a conventional arbor, and in which various types of bits may be quickly'` installed, replaced, and adjusted radiallyand laterally.

More particularly, an object of .the inventionis to provide a tool vol the character-.describedin which complicated cuts can be broken down into simple units by inserting especially ground `bit for each portion oi .the job.

Another object of the invention is to provide. a single tool which eliminates expensive grinding of special cutters, reduces the previously necessary inventory of special form tools, and which may be usadas a fly cutter, for ilat surfaces, for straddle milling, for slot cutting either straight or annular, and for various other purposes which will be apparent to a machinist. My invention thus not only reduces requirements for critical materials, but thecost as Well, and aords a tool for many complicated'op-erations not even possible withl any one tool known to me, thusv realizing a substantial saving in machining time and labor.

These, and other objects and advantages, will become further apparent from the description which follows, taken in conjunction with the drawings.

l'n the drawings:

Figure l is a front elevation of the preferred form of my tool with one of the-bit retainingy Figure dis a. side elevation oone of the slugs or Wedges forming part of the bit retaining assembly;`

Figure e is anedge-view ci the Vsame .taken in the direction of the arrow i of.' Figure 3.

Figure 5 is an enel. elevationof the same part. shown'in Figures 3 and; 4'.

Figure :6 is a side elevation of oneof the tool posts or insertsfiormngpart of the bit retaining. assembly.

Fgurefl is an end. viewof'the same tool post takenin, the direction ofi the arrow l of Figure 6.

.Figure `3 a perspective view or myl invention shown. mounted on anv arborin relation to a piece of. work' being. operated on..

The tool; comprises essentially a carrier lll including a hub portion. lt enabling'the carrier to be keyed or clamped on a conventional. arbor by any vwell'. known means. For many purposes, a key is not desired, and friction clamping .is -preierredso that the tool will. slip ii .an excessively spot in the work .isxencofuntered byn the bist. liproyide annular recesses' l2 in the faces of the :carrier for reception of any suitable dise type clamping members lmownincthe art.

Extending Aoutwardly from the center ofthe carrierare arms i3having parallel plane Afaces Manet E5 and terminating in an arcuate seg-v ment t5 struck.` on the axis of the hub. My preferred :form-includes: four of these. arms, Where= by tlre'short face It joins an adjacent long face l5 ata ,lliangle iorminga notch il. In each of the short faces le is formed a relatively deep annularslot E8 for a purpose later explained. The :long `faces l5 'areitapped and threaded as illustrated at l5',to receive a cap screw at'an angle' of45 to the plane of the lface, and these faces are alsoA formed with' a longitudinal groove le 'for a purpose which will appear;

The bit retaining assembly is generallydesignated by the reference numeral 2i! and cornprises the parts next to be described.

'Ineslug or wedgeti comprises a deformed segment having an exteriorarcuate surface -22 coinciding with the theoretical periphery of the carrier, a short plane face 23,' and Va long plane race 2 at an angle of 96 to the first. The junotion of this angle is hypothetical, if the corner is bevelled as at 25, which is optional. The face 23 is -flat and unbroken. The face 2d 'is provided with a longitudinal tongue ZSadapted to engage in the groovev i9 for guidingrthe slug and holdingfitin correct lateralv registration with the carrier. The slug or wedge is also formed with a hole 2l having a cross section elongated in the radial plane of the carrier, running at an angle of 45 to the face 24 to coincide with the threaded tap l5. These holes are countersunk, as at 2l', to receive the head of a special capscrew 28 which has an upset head with a hexagonal wrench recess 29 adapted to receive an Allen wrench. As indicated on Fig. 1, the hole 2l is somewhat larger than the shank of the bolt of the cap screw, there being adequate clearance to permit of tightening of the slug or wedge along surface 2d toward the outwardly extending face It.,

When the Wedge is in place, its ace 23 is parallel to the face I4 of the carrier arm and these faces are about equidistant from a diameter of the carrier projected parallel to them. Their separation provides a radial slot 36 for the .reception of the tool post or insert constituting a cutter carrier mentioned.

The carrier arms and wedges are preferably bevelled as at 3l to afford clearance when making cuts with the bits angled laterally as later explained.

The tool post, or cutter carrier 35, is preferably in the form of a knurled cylinder. One end 35 is adapted to abut against the wedge face 23, and the other end 3l adjacent to (or against) the carrier arm face or wall It. A diametrical slot 38 is cut through the cylinder to form a bit socket, this slot being open at the end 3l. Circular segmental tongues 39 and 3d extend from the end 3'! for engagement in the annular slot I8 in the carrier arm wall M, to fix the axis position of the cylinder. The interiitting engagement between the tongues Se and de and the annular recess I8 guides and restricts each cutter carrier to a rotatable adjustment about its own axis relative to the carrier it?.

Any suitable bit or cutter di?, which should have a shank with a square or rectangular cross section, may be inserted in the socket 33.

In operation, the bit retaining assemblies are installed on the carrier in the relationship described and illustrated, but with the cap screws loosened to free the inserts 35. One turn from tight is usually suilcient for this purpose. The bits ed are inserted in the sockets 38 and positioned as desired, then the cap screws are tightened` Tightening the cap screws draws the wedges in, closing the radial slots Si? and tightly clamping the inserts 35 and the bits il therein. The Shanks of the bits should` be slightly thicker than the depth of thel sockets so that they will be held between the carrier faces l5 and the bottoms 4l of the insert slots 33. There will then be a slight clearance between the ends 3l of the inserts and the carrier faces fil.

While this is preferred, I would consider it equivalent to have the bit shank entirely within the slot, being held therein by any conventional setscrew, and the clamping face ld bear directly on the end 3l of the insert.

Insertion, adjustment, and replacement of the bits may be accomplished whether the carrier is on or ol the arbor. The bits may be adjusted for depth, and for lateral position. Thus, they may be set to cut radially of the tool, or at a lateral angle thereto, or one or more may be set in one position, and others at other positions. They may be all the same type of bit, or may vary, according to the cut or combination of cuts desired. They may be straight flat edged, V-shaped, or curved. A wide variety of types of bits and cutting combinations is possible. One

W this tool will ordinarily be used on a revolving arbor, at varying speeds according to the work, it may be non-rotatably mounted and operated linearly over the Work, or the work drawn against it. Its great advantage is in its universal adaptability to varying requirements.

While I have described its component parts in identifying language, it will be observed that the tool as a whole comprises a wheel mountable upon an arbor, having demountable peripheral bit sockets adapted to be quickly loosened or tightened, and providing not only for independent insertion or removal of bits, but their independent adjustment radially, as well as laterally on an axis parallel to the tangent of the wheel. It will operate in either direction. It would be a wheel, Within my meaning, even if the periphery were broken by cutting away intermediate portions not necessary to the functions described.

In a broader sense, my invention comprises a bit holder aiording both longitudinal and lateral adjustments of the bit.

Although I have herein shown and described my invention in which I have conceived to be the most practical and preferred embodiment, it is recognized that departures may be made therefrom within the scope of my invention, which is not to be limited to the details disclosed herein but is to be accorded the full scope of the claims so as to embrace any and all equivalent devices.

I-Iaving described my invention, what I claim as new and desire to secure by Letters Patent is:

l. A tool comprising a rotary carrier having faces extending outwardly from its axis of rotation, cutter holders positioned against said faces, clamping means adapted to be tightened towards said faces to clamp the cutter holders therebe-t tween, said cutter holders and faces having interiitting portions guiding and restricting the cutter holders for axial adjustment whereby on loosening the ciamping means each cutter holder may be rotatably adjusted about its axis relatively to the carrier.

2. A tool comprising a rotary carrier having faces extending outwardly from its axis of rotation, cutter holders positioned against said faces, clamping means adapted to be tightened towards said faces to clamp the cutter holders therebetween, said faces having annular recesses therein and the cutter holders having passages therethrough adapted to receive cutters and having portions fitting said recesses restricting the cutter holders to axial adjustments relative to said carrier when the clamping means is loosened.

3. A tool comprising a rotary carrier having faces extending outwardly from its axis of rotation, cutter holders positioned against said faces, clamping means adapted to be tightened towards said faces to clamp the cutter holders therebetween, said faces having annular recesses therein and the cutter holders having passages therethrough adapted to receive cutters and having portions at the sides of said passages iitting said recesses restricting the cutter holders to axial adjustments relative to said carrier when the clamping means is loosened.

CHARLES E. SUCCOP.

(References on following page) REFERENCES CITED The following referenlces are of record in the file of this patent:

Nmnber UNITED STATES PATENTS Name Date Sicotte Dec. 24, 1889 Barnes Mar. 8, 1892 Byerly Dec. 6, 1392 Robertshaw Mar. 14, 1899 Muehlberg Dec. 11, 1900 Taylor et al Sept. 23, 1902 Carr Feb. 2, 1904 Geer Sept. 11, 1906 Number Number 

